On Wed, Jul 08, 2020 at 03:17:31PM +0200, Guoqing Jiang wrote: > On 7/8/20 2:25 PM, Christoph Hellwig wrote: >> -static int md_media_changed(struct gendisk *disk) >> -{ >> - struct mddev *mddev = disk->private_data; >> - >> - return mddev->changed; >> -} > > Maybe we can remove "changed" from struct mddev since no one reads it > after the change. The new md_check_events method reads it.